Will reducing return pumps power reduce the heat it puts out?

[reefingformysons]

Hi all,

So today I thought my tank heaters broke as the temp of the tank was running higher than usual. After removing them and testing them separately I have come to the conclusion that’s it’s properly the produced heat from the new return pump that’s causing the temps to rise.

Will reducing the return pumps power result in reducing the amount of heat it produces?

Thanks in advance

 

[blaxsun]

Yes, though it may be negligible (really depends on the pump and ambient air temperature).